Denham PreenDenham Preen co-founded Envio, which develops software for indexing blockchain data.4 talks by Denham PreenNobody Verifies What Your Agent ReadsModern Blockchain IndexingDAPPCON 2025: Multisig in Motion: Analyzing Safe Data in Realtime Using HyperIndex - Denham PreenDAPPCON 2024: Modern Blockchain Indexing: Syncing Millions Of Events In Seconds - Denham Preen